Automatic pressure-regulator valve



Dec. 18, 1928. 1,696,143

A. K. HINCHMAN LUTOMATIC PRESSURE REGULATOR VALVE Original Filed p 18.1922 L 2o 2] G) 22 21' .I l8 1.: I 23 14 A w 5 I I Fig. 2.

WITNESS; ATTORNEY 1/ a as Alva ICHinchman.

. of my improvement.

Patented Dec. 18, 1928.

UNITED srArEs P ATEN T, or 'CE ALVA KaHINC H MAN, GLOUCESTER CITY, J.MALONE,

OF DREXEL HILL, PENNSYLVANIA. I

AUTOMATIC PRCESSU'REJEEGULATORi VALVE.

' Application filed September 18, 1922, Serial No. 588,946. Renewed May11, 1928.

This invention relates to relief valves, and one of the principalobjects of the invention is to produce a device of this nature whichshall be automatic in its seating and unseating.

Another object is to produce a device of this nature having anadjustable fulcrum.

Another object is to produce a device of this nature which shall besimple and practical of construction, cheap to manufacture, and highlyefficient for a the purpose for which it is designed.

With these and other objects in view as will be more apparent, theinvention consists in certain novel construction and combination andarrangement of parts,.the essential features of which are hereinafterfully described, are particularly pointed out in the appended claim, andare illustrated in the accompanying drawing, in which Figure 1--is alongitudinal sectional view partly in elevation showing one embodimentFigure 2is a similar view showing a modified form of my invention. 7

Like characters of reference refer to like parts in all the views.

Referring to the drawing in detail, 10 represents a main pipe or steamline which is provided withvalve bodies 11 and 12. The body 11 isprovided with a valve seat 13 on which is seated a valve member 14having a stem 15 provided at its upper end with a clevis 16.

The member 12 is provided at one side with a tubular extension 17 inwhich operates a piston 18, the rod 19 of which projects upwardlyparallel with the valve rod 15 and is provided at its upper end with aclevis 20. A bar or link 21 is pivoted at its slotted opposite ends 21'in the clevises 16 and 20, and at an intermediate point passes through aclevis 22 pivot-ally connected to an upright 23 which is supported by acollar or ring 24 movable along the pipe 10 and adapted to be secured inany desired position thereon by a thumb-screw 25. A thumb screw 26 isprovided in clevis 22 so as to permit adjustment according to theposition of the valves and the consequent inclination of the bar 21.

The operation of the above mechanism is as follows When the pressure inthe member 11 under the valve 14 becomes SlifilCiBIltly greater than thepressure inthe member 12, the

described valve 14 is lifted, and the piston 18 is Iow ered in thecylindrical member 17. The steam now rushes through and gradually buildsup a pressure under piston 18. When this pressure is sufficientlygreatit forces the piston 18 upwardly and thereby efl'ects 19 isconsiderably longer. The balance of the mechanism is substantially thesame as shown in Figure 1.

In this form of the invention, when the pressure builds up above thevalve member 14 it is forced down until the ports 30 and 31 register sothat the steam may pass through the line. In due time the pressure willbuild up above the piston 18 and will force it down in member 17 wherebythe valve. 14 will be raised until the ports 30 and 31 are no longer inregister. 7

While I have described what I deem to be the most desirable embodimentsof my in vention, I do not limit myself to the specific details ofconstruction .of material, nor to anything less than the Whole of myinvention as defined in the appended claim.

What I claim In an automatic pressure regulator valve, the combinationwith a steam line, of a of steam therethrough, a cylinder havingcommunication with the steam line, a pressure operated piston movable insaid cylin der, an upstanding stem on said plunger valve, an upstandingstem on said piston, a supporting yoke having a vertical standard saidopening, clevis brackets on said stems for slidably pivoting the stemsto the 10 slotted ends of the bar, and means carried by the first clevisbracket to retain such first mcke ip a just d lat on "to said h ALVA K.HINCHMAN.

